Dengue overview

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Dengue overview

  1. 1. Dengue Lyndon L. Lee Suy, MD National Dengue Program Coordinator Department of Health
  2. 2. Dengue & DHF  Endemic in >100 tropical/subtropical countries  No specific treatment  Spreads rapidly affecting mostly children  An environmental issue  Emphasis on emergency control during epidemics rather than developing programs to prevent epidemic transmission
  3. 3. Global Situation of DHF  2.5 B at risk of dengue infection over 100 countries  Annual dengue cases – 100 M  DF/DHF/DSS admissions per year – 500,000 cases  Mortality rate – 5%
  4. 4. Philippines Backgrounder:  1953 – reported as H-Fever  1958 – notifiable disease  1966 – outbreak in Metro Manila  Endemic in the country  Increase in cases during the rainy season
  5. 5. National Dengue Prevention & Control Program  1993: DOH initiated the program  Pilot sites: Region VII & NCR  1998: Nationwide implementation
  6. 6. Goal of the Program Reduce morbidity and mortality from dengue infection by preventing the transmission of the virus from the mosquito vector to human.
  7. 7. Health Status Objectives By the end of 2004:  Reduce incidence from 32/100,000 to 20/100,000  Reduce case fatality rate by <1%  Detect & contain all epidemics
  8. 8. Risk Reduction Objectives Reduce the risk of human exposure to Aedes bite by: House Index of <5 Breteau Index of 20 Increase % of HH practicing removal of mosquito breeding places to 80% Increase awareness on DF/DHF to 100%
  9. 9. Services & Protection Objectives  Establish a Dengue Reference Laboratory capable of performing IgM capture ELISA for Dengue Surveillance  Increase the % of 1 and 2 government hospitals with laboratory capable of platelet count and hematocrit  Ensure surveillance and investigation of all epidemics
  10. 10. Dengue Cases & Deaths by Region (Philippines, as of August 15, 2004) REGION CASES DEATHS CFR (%) I 83 0 0 II 158 0 0 CAR 194 0 0 III 1121 5 0.4 IV A 302 2 0.7 IV B 9 0 0 NCR 1438 7 0.5 V 269 6 2.2 VI 691 7 1 VII 383 5 1.3 VIII 420 1 0.2 IX 75 1 1.3 X 590 5 0.8 XI 1529 37 2.4 XII 97 1 1 ARMM 60 1 1.6 CARAGA 197 7 3.6 TOTAL 7616 85 1.1
  11. 11. Aedes aegypti Mosquito
  12. 12. Global Resurgence of Dengue  Population growth;  Uncontrolled urbanization;  Lack of effective mosquito control;  Increased air travel (Gubler, 1998)
  13. 13. Color Codes for Dengue No cases/clustering in an area.
  14. 14. Color Codes for Dengue Clustering of cases: More than 2 cases in a barangay.
  15. 15. Color Codes for Dengue Hot Spot: An area where an increase in number of cases was observed for 2 consecutive weeks even though the number is still within the expected range.
  16. 16. Color Codes for Dengue Outbreak: An area wherein the number of cases is more than the expected range.
  17. 17. Outbreak Controlled When the number of cases has decreased to within the expected range for 2 consecutive weeks.
  18. 18. Preventive/Control Strategies  Intensify IEC campaign on prevention & control;  Improve environmental sanitation;  Entomologic survey;  Mobilize residents of affected barangay & start clean-up campaign;  Start community surveillance; search for more cases;  Equip local health units for management of cases
  19. 19. Maraming Salamat Po!!!

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